Vol. 9, Special Issue 12, Part O (2025)

Field experiments were conducted over three consecutive Rabi seasons (2019-20, 2020-21, and 2021-22) at Agricultural Research Station, Utukur, Kadapa, Andhra Pradesh. The trial was laid out in a randomized block design (RBD) with eight treatments, three replications using black gram variety LBG 752. Observations on whitefly and thrips populations were recorded on trifoliate leaves per plant before treatment and at 3, 7, and 10 days after each spray. Among the tested insecticides, spinetoram @ 0.6 ml l⁻¹, spiromesifen @ 1 ml l⁻¹, and diafenthiuron @ 1.25 g l⁻¹ consistently demonstrated superior control of both pest populations across multiple sampling intervals following foliar sprays. These treatments significantly reduced thrips and whitefly densities, consequently lowering the incidence of bud necrosis and yellow mosaic virus (YMV), respectively.